How do I move my dog from a weight loss food back to a normal maintenance amount?

Use your dog's new target weight, not the original starting weight, in the resting energy formula, then apply the standard 1.6 times multiplier for an average neutered adult, or whatever multiplier suits your dog's actual activity level.

This new maintenance figure will be noticeably lower than what your dog was eating before the diet began, since it reflects the healthier, lower weight rather than the original overweight figure.

If you plan to move off a specific weight management formula back to a standard adult food, do this gradually over one to two weeks, mixing increasing amounts of the new food with decreasing amounts of the old to reduce the chance of digestive upset.

Recalculate grams for the new food's specific calorie density, since a weight management formula and a standard formula often differ in calories per 100g.

Continue checking body condition every few weeks even after reaching target weight, since old habits like generous treating or larger portions can gradually creep back in without anyone noticing.

Treat the new maintenance amount as the new normal rather than a temporary adjustment, and involve the whole household in understanding the updated feeding routine.